How to Make Portlight Window Covers

Item # X-HT-200628

Small portlight windows are great for letting a little extra light and air into your boat’s cabin. However, they can be a little difficult to cover when you want some extra privacy. For our next project in our Boat Cabin Makeover Series, we’re going to show you how to make easy-to-sew elastic covers for your portlights. Join us in today's DIY project and learn how to make covers for your boat's portlights.

DIY Portlight Window Covers

The benefits of using these elastic portlight covers are that they effectively provide privacy when they are in place. They are also super easy to remove when you need a little more light or want to open the window. For our covers, we used a Sunbrella® Shadow fabric, which has an open weave that allows a small amount of light to still come through. If you wanted a darker shade, try using a heavier fabric like a Sunbrella® Upholstery Fabric.

In this video, you’ll learn how to measure the portlights for the cover, pattern the fabric, and sew up the covers, including how to sew a sleeve with shock cord so the covers can easily be put on and removed with the elastic insert.

Video Chapters:

  • Measuring & Patterning - 0:23 min.
  • Sewing Sleeve with Shock Cord - 2:27 min.
  • Material List - 4:58 min.


  • Fabric (we used Sunbrella Shadow)
  • Shock Bungee Cord 1/8” #29302
  • Polyester Thread (we used V-46 for our lightweight fabric #20202)

Tools List:

  • Tape Measure #102986
  • Sailrite® Edge Hotknife #103800
  • Sewing machine
  • Pencil
  • L-Square
  • Scissors

The best part of this project is how simple these portlight covers are to make. You can sew covers for all your portlights in no time at all!

Do you cover the portlights on your boat? Leave us a comment and share how you did it!